An extended ultraviolet ring around the SB0 galaxy NGC 4262

Details An extended ultraviolet ring around the SB0 galaxy NGC 4262 An extended ultraviolet ring around the SB0 galaxy NGC 4262

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap%26ss.335..231b&link_type=abstract

Astrophysics and Space Science, Vol. 335, No. 1, p. 231-236

Astronomy and Astrophysics

Astrophysics

Galaxies General, Galaxies Elliptical And Lenticular, Galaxies Interactions

Scientific paper

We present Galaxy Ultraviolet Explorer (GALEX) satellite observations of the SB0 galaxy NGC 4262 where we detect an extended, outer ring studded with UV-bright knots surrounding the galaxy body. Such a structure, not visible at optical wavelengths, is coupled with a ring of atomic (HI) gas. We will show that both star-forming and HI rings surrounding this SB0 galaxy share the same radial distance from the galaxy center and spatial orientation. We also model the kinematics of the ring(s) and of the galaxy body. Their kinematics is not coupled with that of the galaxy stars. We suggest that NGC 4262 has undergone a major gas stripping event in the past that was the origin of the present "necklace" of UV-bright knots.

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